365hostingsupport ultimate source of Server Security, cPanel server management and monitoring. Since 2012 we are offering top class technical support services at lowest prices. We offer 100% Satisfaction with 7 Days Money Back Guarantee.

1) First of all You must disable Indexing Service. If you are not using FrontPage search bot then you don’t need indexing service running and you must disable it.
2) Always remember to close your terminal Services sessions and logout, never disconnect directly.
3) Enable Windows Firewall and secure your VPS.
4) Disable spamassassin checks if you don’t require it in your VPS.
5) Avoid to run antivirus on your VPS.
6) You should regularly Defrag your VPS drives.
7) Don’t forget that you can manage your VPS through the Virtuozzo Power Panels,.This Virtuozzo power panel includes many features like stop, start, reboot, backup, restore and even mount the filesystem without turning on the VPS.

Most of the ISP blocks default SMTP port (25) to control mail flow hence it is always advisable to have additional SMTP port open on the server. Here are the steps to configure qmail to use alternate SMTP port 587 on Linux Plesk server.

1. Login to the shell with root user and go to “xinetd.d” directory
[root@server]# cd /etc/xinetd.d

–keep-dst
Do not clean synced destination container private area in case of some
error. It makes sense to use this option on big container migration to
avoid re-syncing container private area in case some error
(on container stop for example) occurs during first migration attempt.

–online
Perform online (zero-downtime) migration: during the migration the
container freezes for some time and after the migration it
keeps working as though nothing has happened.

Firewalls help us to protect our network from unsolicited intrusions. Using them we can choose which ports we want to be open and which one’s we dont. Information is kept private by your organization and responsibility of individuals asociated. Nobody
from the outside implicitly knows this information, but attackers know as well as spammers, that for some kind of attacks you
can use a special program to scan all the ports on a server to glean this valuable information i.e. what is open and what is not.

A port scan is a symptom of a larger problem coming your way. It is often the pre-cursor for an attack and is a critical piece of information for properly defending your information resources. PortSentry is a program designed to detect and respond to port scans against a target host in real-time and has a number of options to detect port scans. When it finds one it can react in the following ways:

A log indicating the incident is made via syslog().
The target host is automatically dropped into /etc/hosts.deny for TCP Wrappers.
The local host is automatically re-configured to route all traffic to the target to a dead host to make the target system disappear.
The local host is automatically re-configured to drop all packets from the target via a local packet filter.
The purpose of this is to give an admin a heads up that their host is being probed.

Edit /etc/portsentry/portsentry.conf and specify the ports you want portsentry to protect:

# Un-comment these if you are really anal:
#TCP_PORTS=”1,7,9,11,15,70,79,80,109,110,111,119,138,139,143,512,513,514,515,540,635,1080,1524,2000,[…]”
#UDP_PORTS=”1,7,9,66,67,68,69,111,137,138,161,162,474,513,517,518,635,640,641,666,700,2049,31335,[…]”
#
# Use these if you just want to be aware:
TCP_PORTS=”1,11,15,79,111,119,143,540,635,1080,1524,2000,5742,6667,12345,12346,20034,27665,31337,[…]”
UDP_PORTS=”1,7,9,69,161,162,513,635,640,641,700,37444,34555,31335,32770,32771,32772,32773,32774,[…]”
#
# Use these for just bare-bones
#TCP_PORTS=”1,11,15,110,111,143,540,635,1080,1524,2000,12345,12346,20034,32771,32772,32773,32774,[…]”
#UDP_PORTS=”1,7,9,69,161,162,513,640,700,32770,32771,32772,32773,32774,31337,54321″
It should be ports that are not in use on the system. E.g., if you use IMAP (port 143 TCP) on the server you should remove

143 from the list above. The rest of portsentry.conf is well commented, but normally the default values should work.